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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Validator\Constraints;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;
use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
/**
* Validator for Callback constraint
*
* @author Bernhard Schussek <bschussek@gmail.com>
*
* @api
*/
class CallbackValidator extends ConstraintValidator
{
/**
* {@inheritDoc}
*/
public function validate($object, Constraint $constraint)
{
if (null === $object) {
return;
}
if (null !== $constraint->callback && null !== $constraint->methods) {
throw new ConstraintDefinitionException(
'The Callback constraint supports either the option "callback" ' .
'or "methods", but not both at the same time.'
);
}
// has to be an array so that we can differentiate between callables
// and method names
if (null !== $constraint->methods && !is_array($constraint->methods)) {
throw new UnexpectedTypeException($constraint->methods, 'array');
}
$methods = $constraint->methods ?: array($constraint->callback);
foreach ($methods as $method) {
if (is_array($method) || $method instanceof \Closure) {
if (!is_callable($method)) {
throw new ConstraintDefinitionException(sprintf('"%s::%s" targeted by Callback constraint is not a valid callable', $method[0], $method[1]));
}
call_user_func($method, $object, $this->context);
} else {
if (!method_exists($object, $method)) {
throw new ConstraintDefinitionException(sprintf('Method "%s" targeted by Callback constraint does not exist', $method));
}
$reflMethod = new \ReflectionMethod($object, $method);
if ($reflMethod->isStatic()) {
$reflMethod->invoke(null, $object, $this->context);
} else {
$reflMethod->invoke($object, $this->context);
}
}
}
}
}